Forms :: Execute Procedure Using Personalization

I have written a package in that package i have written a procedure. That procedure has two i/p and two o/p variables. I am calling the procedure using the below syntax.

in built in type : Execute a Procedure

='Declare
v_customer_name varchar2(100);
v_id number;
v_out1 number;
v_out2 NUMBER;
begin
v_id := 1041;
XXFBI_OM_UTILITIES.XXFBI_CUSTOMER_CREDIT_DETAILS1(''' || ${item.order.SOLD_TO.value} || ''', v_id, v_out1, v_out2);
end'

Its working fine.

My question is how can i capture the value of out put variables v_out1 and v_out2 and assign to a DFF.